Nozzle



March 10, 1936. L. ELL

NOZZLE Filed Nov. 6, 1934 Patented Mar. 10, 1936 UNITED STATES PATENT OFFICE NOZZLE Lars Ell, Stockholm, Sweden, assignor to Electrolux Corporation, Dover, Del., a corporation of Delaware Application November 6, 1934,Serial No. 751,714 In Germany November 8, 1933 5 Claims. (Cl. 15-158) My invention relates to nozzles for vacuum nozzle such collapse will take place and the inlet opening in the bottom of the resilient member will be sucked together unless means are taken to prevent it.

One of the objects of my invention is to provide suitable means for preventing the closing of the inlet opening due to the efiect of suction.

Further objects and advantages of my invention will be apparent from the following description considered in connection with the accompanying drawing, which forms a part of this specification, and of which:

Fig. l is a bottom view of one embodiment of my invention;

Fig. 2 is a cross-sectional view, taken line 22 of Fig. 1;

Fig. 3 is a cross-sectional view, similar to Fig. 2, showing a second embodiment of my invention; and

Fig. 4 is a cross-sectional view showing a third embodiment of my invention.

Referring more particularly to Figs. 1 and 2, reference character In designates an elongated base member made of rigid material, such as metal, wood or Bakelite. Base member i is formed with an elongated opening ll therethrough. An elongated hollow member l2 of resilient material, such as soft rubber, is made with an upper flange l3, which extends across the solid part of base member ID. Formed integral with flange I3 is a flared portion H, the

on the upper part of which extends through the opening II in base member l0 and the lower part of which extends below the base member. Hollow member I2 is formed with a lower elomgated inlet opening l5. In order to preventthe drawing together of the material of the hollow member around opening IS, the hollow member is formed with -a bead i6, which is reenforced.

In the embodiment sho in'Fig. 2-, the reenforcing is obtained by vul anizing this bead espe:

cially hard. This gives sufficient stiffening to the sides of opening IE to prevent closure of the opening due to the effect of suction.

suction.

A hose connection member I1 is secured to base member ill by means of bolts i8. Flange l3 of the hollow member extends between the base member and member l1 and acts as a packing to prevent the leakage of air therebetween. The 5 outer edge of flange l3 may be formed so as to embrace the outer edge of base member l0,.as is shown at l9, in order to provide a soft surface for preventing the marring of furniture if the nozzle is accidentally brought into contact there- I with.

A plurality of groups of brush bristles 20 are suitably secured to the under side of base member l0 and extend downwardly therethrough around the outside of hollow member l2. The hollow member serves to support these bristles and to prevent them from being drawn together by the suction.

In operation, a conduit is connected to member I! and to a source of suction, such as a vacuum cleaning apparatus. Consequently, a reduced pressure is produced within hollow member l2 and air is drawn thereinto through lower inlet [5. If the nozzle is passed over a dusty surface, the bristles serve to loosen the dust, which is then picked up by the air stream and carried to the vacuum cleaner. As has been previously ex-' 1 plained, the reenforcing of head I6 prevents the closing of the opening l5 due to the efl'ect of The embodiment shown in Fig. 3 is similar to that shown in Fig. 2, with the exception that the bead i6 is formed with a slot or groove 2| in which is placed a stiff wire 22. Wire 22 serves to reenforce the resilient member around the opening l5 and thus serves to prevent closing of the opening.

' In the embodiment shown in Fig. 4, the hollow member 12 is secured in a groove 23 formed in a portion 24 depending from the base member I0. 40 In this embodiment a reenforcing wire is cast in the bead it when the hollow member is made.

If during cleaning the nozzle should be pressed too hardly against the surface to be cleaned it may happen that the bristles, if made of too soft material, are bent outwardly so that the bottom 7 of the resilient hollow member l2 may come into close contact with the surface to be cleaned. In order to prevent the hollow member from adher- 'ing to the surface due to the partial vacuum maintained in the member it is preferable that portioning of the hollow member allows the bottom of the hollow member to be lifted inwardly due to suction eflfect, thus freeing the nozzle from the surface.

While I have shown and described three more or less specific embodiments of my invention, it is to be understood that this has been done for Purposes of illustration only, and that my invention is not to be limited thereby, but is to be given the broadest interpretation commensurate with the appended claims, viewed in the light of the prior art.

What claim is:

1. In an elongated suction nozzle, a rigid base member formed with an opening therethrough, a suction conduit communicating with said opening, an elongated hollow member of resilient material depending from said base and having its interior in communication with said opening, said hollow member being formed with a lower elongated inlet opening, a rigid reenforcing member extending around the inlet opening of said hollow resilient member for preventing the closing of said inlet opening due to the efiect of suction, and bristles secured to said base member and extending downwardly therefrom around, and supported laterally by, said hollow member.

2. In an elongated suction nozzle, a rigid base member formed with an opening therethrough,,

a suction conduit communicating with said opening, an elongated hollow member of resilient material depending from said base and having its interior in communication with said opening, said hollow member being formed with a lower elongated inlet opening, a rigid member cast in the material of said hollow member around the inlet opening thereof for preventing the closing of said inlet opening clue to the effect of suction, and bristles secured to said base member and extending downwardly therefrom around, and supported laterally by, said hollow member.

3. In an elongated suction nozzle, a rigid base member formed with an opening therethrough, a

aosaeit suction conduit communicating with said opening, an elongated hollow member of resilient material depending from base and having its interior in communication with aid opening, said hollow member being formed with a lower elongated inlet opening. said hollow member being formed with a slot therein around said inlet opening, a rigid member in said slot for preventing the closing of said inlet opening due to the efiect of suction, and bristles secured to said base memher and extending downwardly therefrom around, and supported laterally by, said hollow member.

4. In an elongated suction nozzle, a rigid base member formed with an opening therethrough, a suction conduit communicating with said opening, an elongated hollow member of resilient material depending from said base and having its interior in communication with said opening, said hollow member being formed with a lower inlet opening, the greatest interior width of said hollow member being at least twice as great as the width of said inlet opening, and bristles secured to said base member and extending downwardly therefrom around, and supported by, said hollow member.

5. In an elongated suction nozzle, a rigid base member formed with an opening therethrough, a suction conduit communicating with said opening, an elongated hollow member of resilient material depending from said base and having its interior in communication with said opening, said hollow member being formed with a lower inlet opening, the greatest interior width of said hollow member being at least twice as great as the width of said inlet opening, a rigid reenforcing member extending around the inlet opening for preventing the closing of said inlet opening due to the effect of suction, and bristles secured to said base member and extending downwardly therefrom around and supported by, said hollow member.

LARS ELL 

